I have a 97 GTP with 148,000 miles. It's been a great car until about a month ago. It will crank up when cold perfectly and runs great, the problem starts after you get to your destination and it sits there for 20 minutes or so. when you try to start it will misfire and rpm's go up and down until it shuts off (check engine light goes on), you now have to wait for it to cool down (about an hour) for it to crank up again. Mechanic said it was the fuel pump and I just had it replaced with an A/C delco. Same problem, and now I noticed the boost is not working. Any ideas what to look at? Sensors etc?
